.trailer{
    width: 100%;
    height: 1.2rem;
}
.trailer_first{
    width: 25%;
    height: 1.2rem;
    float: left;
}
.trailer_first_on{
    width:0.5rem;
    height: 0.5rem;
    margin: auto;
    padding-top: 0.2rem;
}
.trailer_first_on img{
    width:0.5rem;
    height: 0.5rem;
}
.trailer_first_two{
    padding-top: 0.1rem;
    width: 100%;
    height: 0.25rem;
    font-size: 0.2rem;
    text-align: center;
    color: #878787;
}